"I tell everyone, but citric acid in bread dough. Making it a bit acidic makes the yeast go nuts and even "heavy" breads rise more than you'd expect. You could use lemon juice or vinegar I suppose but citric acid (in granules) is easy to find (Indian section of supermarkets, or "gourmet" store), and will hang out happily in your cupboard forever."
I was about to comment the same thing!
You just did.
Aside from that, it causes migraines, has been linked to sudden cardiac arrest in athletes, and contributes to infertility in males (it collects in the testicles).
There is a MSG institute (why is there an MSG institute? does any other food additive have an institute). Must be a PR and lobbying machine, kind of like big tobacco had to say smoking doesn't cause any problems.